from tkinter import *


coords = [0, 0, 10, 0, 10, 10, 20, 10, 20, 0, 30, 0, 30, 20, 0, 20]


root = Tk()
root.title ("ИТ марафон")
root.geometry ("500x500")


canvas = Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
canvas.create_polygon(coords)

root.mainloop()
